Malicious PDF — malware analysis report

Static analysis result for SHA-256 80ba74098b21b058…

MALICIOUS

PDF

42.2 KB Created: 2020-08-12 02:21:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 82c1009e54511e8d7921b0e950ee987b SHA-1: 2834e3ade6c3f343496917202367b613a91037d6 SHA-256: 80ba74098b21b058f8140b6cba965c58b087995878a40a3ac62c8667922869c4
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a large number of embedded links, many of which point to external PDF files hosted on Shopify, suggesting a link farm for SEO manipulation or to obscure malicious redirects. One critical heuristic identified a direct link to known malicious redirector infrastructure at "https://ttraff.cc/pify?keyword=bosch+oven+manual+pdf". The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=bosch+oven+manual+pdf
    • http://files.myers-adams.com/uploads/1/3/0/7/130776439/pijepejodewot.pdf
    • http://files.levelupchurchmemphis.com/uploads/1/3/1/6/131606228/cbadc18.pdf
    • http://files.beautifulrooms.london/uploads/1/3/0/7/130739059/lemubusiwixi.pdf
    • http://files.willsphotographypa.com/uploads/1/3/0/7/130739654/bujixojabaxosa-vevawe-lomikazixibet-pamos.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/14264081605.pdf
    • https://cdn.shopify.com/s/files/1/0438/0321/3984/files/87854985858.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/gumixerureguxixiriluf.pdf
    • https://cdn.shopify.com/s/files/1/0430/0092/2265/files/windows_7_updates_to_avoid.pdf
    • https://cdn.shopify.com/s/files/1/0433/5425/9606/files/47737734388.pdf
    • https://cdn.shopify.com/s/files/1/0432/4563/3693/files/balada_adelina_partitura.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/runuwadobona.pdf
    • https://cdn.shopify.com/s/files/1/0439/1092/2392/files/mudakap.pdf
    • https://cdn.shopify.com/s/files/1/0427/5827/5238/files/great_food_fast_bob_warden.pdf
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/wepineluz.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/56277415773.pdf
    • https://cdn.shopify.com/s/files/1/0433/3545/0774/files/gastric_sleeve_pre_op_diet.pdf
    • https://cdn.shopify.com/s/files/1/0428/3029/9292/files/putavokawedadagumoxefu.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006759.bin
912ca5af60cc586694c4b9372593a637ce17e42fd2455327ba8dfe1983e521d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6759 5408 bytes
font_01_sfnt_off0000799e.bin
e43116792aef0af775051aec3c0eaa03393b64c0ffaee3867d06aa8f025ce9fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x799E 10032 bytes

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